Home / 440,134.40-659,618.40-389,979.20

Finding the Fourth Proportional to 440,134.40, 659,618.40 and 389,979.20

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Solution

The fourth proportional to 440,134.40, 659,618.40 and 389,979.20 is: 584,452.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,134.40 : 659,618.40 = 389,979.20 : x
  2. Step 2: Convert to fraction form
    440,134.40/659,618.40 = 389,979.20/x
  3. Step 3: Cross multiply
    440,134.40x = 659,618.40 × 389,979.20
  4. Step 4: Simplify right side
    440,134.40x = 257,237,455,937.28
  5. Step 5: Solve for x
    x = 257,237,455,937.28/440,134.40
  6. Step 6: Final answer
    x = 584,452.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.